He explains that the Torah is the means by which a Jew can return to His origins, can connect to HaShem. (playing off what we said yesterday) However this is only possible if his learning is performed l'shma, (through great self sacrifice and mesirat nefesh) for the sake of connecting to HaShem and not, heaven forebid, for other motivations.
How is this possible that (1) a Jew can return Torah to its source, (2) that the Torah helps us to return to our source? The Noam Elimelech explains, both we and the Torah were carved out from beneath the HaShem's holy throne, the kiseh haKavod.
This is the meaning of זאת חוקת התורה - this is the place from which the Torah was carved. [carved is from the root חקק, which is an interpretation of the word חוקת]